The cheat codes will have to be inserted in the screen in which the name of the character is modified (insert the name of the trick in place of that of the character).
| Effect | Code |
| Select levels | FLASHMOTOR or SUPER WELL or TRAVELCARD |
| Unlock all objects | UAINTNUFFIN |
| Cheats mode (unlock everything) | HERC |
| Unlock all weapons (press * on the NUMPAD numeric keypad) | PIEANDMASH or ASAWINDOW or DEATHTOALL |
| Unlock all weapons, get out of prison, get armor and multiplier x10 | IAMGOD |
| Points to the maximum | AVERYRICHMAN |
| 99 lives | 6661970 |
| No policeman | TITHEAD or IAMFILTH |
| Get out of jail for free | Travelcard |
| Change car color and get 9,999,999 points | psychadelic |
| Shoot from the vehicle | Drivebys |
| Turn off the police sirens | SILENCE |
| Debug mode | ROMMEL |
If you are using PlayStation 1, you should check out Grand Theft Auto London PlayStation 1 Cheat Codes.
